package com.Jian.reggie.controller;

import com.Jian.reggie.common.R;
import com.Jian.reggie.impl.Employee;
import com.Jian.reggie.service.EmployeeService;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import lombok.extern.slf4j.Slf4j;
import org.apache.logging.log4j.util.Strings;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

/**
 * ClassName: EmployeeController
 * Package: com.Jian.reggie.controller
 * Description:
 *
 * @Author 蹇泽阳
 * @Create 2023/11/24 21:33
 * @Version 1.0
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
  @Autowired
  private EmployeeService employeeService;
  
  /**
   * 员工登录
   *
   * @param request
   * @param employee
   * @return
   */
  @PostMapping("/login")
  public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
    
    // 1、将页面提交的密码password进行md5加密处理
    String password = employee.getPassword();
    password = DigestUtils.md5DigestAsHex(password.getBytes());
    
    // 2、根据页面提交的用户名username查询数据库
    LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
    queryWrapper.eq(Employee::getUsername, employee.getUsername());
    Employee emp = employeeService.getOne(queryWrapper);
    
    // 3、如果没有查询到则返回登录失败结果
    if (emp == null) {
      return R.error("登录失败");
    }
    
    // 4、密码比对，如果不一致则返回登录失败结果
    if (!emp.getPassword().equals(password)) {
      return R.error("登录失败");
    }
    
    // 5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
    if (emp.getStatus() == 0) {
      return R.error("账号已禁用");
    }
    
    // 6、登录成功，将员工id存入Session并返回登录成功结果
    // session对象的作用域为一次会话，通常浏览器不关闭，保存的值就不会消失，当然也会出现session超时的情况
    request.getSession().setAttribute("employee", emp.getId());
    return R.success(emp);
  }
  
  /**
   * 员工退出
   *
   * @param request
   * @return
   */
  @PostMapping("/logout")
  public R<String> logout(HttpServletRequest request) {
    // 清理 Session中保存的当前登录员工的id
    request.getSession().removeAttribute("employee");
    return R.success("退出成功");
  }
  
  /**
   * 添加员工
   *
   * @param employee
   * @return
   */
  @PostMapping
  public R<Employee> addEmployee(@RequestBody Employee employee, HttpServletRequest request) {
    log.info("添加员工：{}", employee);
    // 1、将页面提交的密码password进行md5加密处理
    String password = "123456";
    password = DigestUtils.md5DigestAsHex(password.getBytes());
    employee.setPassword(password);
    // 2、设置员工状态为已启用
    employee.setStatus(1);
    // Long empId = (Long) request.getSession().getAttribute("employee");
    // employee.setCreateUser(empId);
    // employee.setUpdateUser(empId);
    // 3、保存员工信息
    employeeService.save(employee);
    return R.success(employee);
  }
  
  /**
   * 员工信息分页查询
   */
  @GetMapping("page")
  public R<Page> page(int page, int pageSize, String name) {
    // 创建page对象
    Page pageParam = new Page(page, pageSize);
    
    // 封装条件，判断条件值不为空
    LambdaQueryWrapper<Employee> wrapper = new LambdaQueryWrapper();
    wrapper.like(Strings.isNotEmpty(name), Employee::getName, name);
    // 添加排序条件
    wrapper.orderByDesc(Employee::getUpdateTime);
    
    // 调用mp的方法实现条件分页查询
    employeeService.page(pageParam, wrapper);
    // log.info("员工信息分页查询：{}", pageParam.getTotal());
    return R.success(pageParam);
  }
  
  /**
   * 员工状态修改
   *
   * @param employee
   * @param request
   * @return
   */
  @PutMapping
  public R<String> update(@RequestBody Employee employee, HttpServletRequest request) {
    // Long empId = (Long) request.getSession().getAttribute("employee");
    log.info("修改员工：{}", employee.toString());
    // employee.setUpdateTime(LocalDateTime.now());
    // employee.setUpdateUser(empId);
    // 如果点击启用，前端会传递status=1，如果点击禁用，前端会传递status=0
    // 所以不用设置status的值
    employeeService.updateById(employee);
    return R.success("修改成功");
  }
  
  @GetMapping("{id}")
  public R<Employee> getEmployee(@PathVariable("id") Long id) {
    Employee employee = employeeService.getById(id);
    
    return R.success(employee);
  }
}
